//
//  DiscoverTableViewController.swift
//  fansarea
//
//  Created by 张 on 2018/5/10.
//  Copyright © 2018年 张. All rights reserved.
//

import UIKit
import AlamofireImage

class DiscoverTableViewController: UITableViewController {

    @IBOutlet var spinner: UIActivityIndicatorView!
    
    var areas :[AVObject] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        refreshControl = UIRefreshControl()
        refreshControl?.addTarget(self, action: #selector(self.refreData), for: .valueChanged)
        
        spinner.center = view.center
        view.addSubview(spinner)

        // Uncomment the following line to preserve selection between presentations
        // self.clearsSelectionOnViewWillAppear = false

        // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
       getDataCloud()
        // self.navigationItem.rightBarButtonItem = self.editButtonItem
    }
    
    @objc func refreData()   {
        getDataCloud(needUpDate: true)
    }
    
    func getDataCloud(needUpDate: Bool = false) {
        let query = AVQuery(className: "Area")
        
        query.order(byDescending: "createdAt")
        
        if needUpDate {
            query.cachePolicy = .ignoreCache
        }else{
            query.cachePolicy = .cacheElseNetwork
            query.maxCacheAge = 60 * 2
        }
        
        query.findObjectsInBackground { (results, error) in
            if let results = results as? [AVObject]{
                self.areas = results
                
                OperationQueue.main.addOperation {
                    
                    self.refreshControl?.endRefreshing()
                    self.spinner.stopAnimating()
                    self.tableView.reloadData()//千万别忘记这里的重新刷新表格
                }
                
            }else{
                print(error ?? "未知错误")
            }
            
            
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    // MARK: - Table view data source

    override func numberOfSections(in tableView: UITableView) -> Int {
        // #warning Incomplete implementation, return the number of sections
        return 1
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        // #warning Incomplete implementation, return the number of rows
        return areas.count
    }

    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)

        // Configure the cell...
        let area = areas[indexPath.row]
        
        cell.textLabel?.text = area["name"] as? String
        
//        if let imgFile = area["image"] as? AVFile {
//            imgFile.download { (url, error) in let nsd = NSData(contentsOf: url!)
//        cell.imageView?.image = UIImage(data: nsd! as Data) }
//
//        }
        
        let imgFile = area["image"] as? AVFile
        
       // print(imgFile?.url() ?? "图片地址+11111")
        let urlstring = imgFile?.url()!;
        
        let url = URL(string: urlstring!)!
        let placeholderImage = #imageLiteral(resourceName: "photoalbum")
        
//        imgFile?.getDataInBackground({ (data, error) in
//            //异步下载图片
//            if let data = data {
//                OperationQueue.main.addOperation {
//                    cell.imageView?.image = UIImage(data:data)
//                }
//
//            }else{
//                print(error ?? "获取图片未知错误")
//            }
//        })
//
        cell.imageView?.af_setImage(withURL: url, placeholderImage: placeholderImage)

        return cell
    }
    

    /*
    // Override to support conditional editing of the table view.
    override func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
        // Return false if you do not want the specified item to be editable.
        return true
    }
    */

    /*
    // Override to support editing the table view.
    override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
        if editingStyle == .delete {
            // Delete the row from the data source
            tableView.deleteRows(at: [indexPath], with: .fade)
        } else if editingStyle == .insert {
            // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
        }    
    }
    */

    /*
    // Override to support rearranging the table view.
    override func tableView(_ tableView: UITableView, moveRowAt fromIndexPath: IndexPath, to: IndexPath) {

    }
    */

    /*
    // Override to support conditional rearranging of the table view.
    override func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
        // Return false if you do not want the item to be re-orderable.
        return true
    }
    */

    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destinationViewController.
        // Pass the selected object to the new view controller.
    }
    */

}
